Romans for Skeptics

Paul was a bad influence on Christianity. And nowhere is this more evident
than in his epistle to the Romans. Here Paul fully exposes his nastiest belief: that salvation is a completely arbitrary decision on the part
of God; none of us has anything to do with it. The only free will that exists in the universe is God's.

Highlights:

The existence and nature of God are self-evident; thus, unbelievers are "without excuse."
1:20

God abandons those who don't know him to "uncleanness and vile affections." 1:24-26